How to catch last iteration inside $.each in jQuery?

Question

var arr = {\'a\':fn1,\'b\':fn2,\'c\':fn3}

$.each(arr,function(name,func){
(do something particular for the last iteration)
...
})

It\'ll be best i

Answer 1

Here I propose a brand new, improved answer.

An elegant way could be using a after() function wrapper. Here's the code:

function after(fn, times){
   return function(){
     if(--times === 0){
       var args = Array.prototype.slice.call(arguments);
       fn.apply(this, args);
     }
   };
 }

fn is the function you want to be executed at last, times is the number of different response you are waiting for.

after() wraps your function and creates a new function that runs its code only after times calls. Here's an example in brief:

function onLastResponse(foo){
  console.log('this is last iteration');
}

var myCallback = after(onLastResponse, 3);

myCallback(); //not executed
myCallback(); //not executed
myCallback(); //executed

Check this jsbin for a live example: https://jsbin.com/sufaqowumo/edit?js,console